Ball-cap for binder-posts.



G. A: SHOEMAKER & E. G. HOLLAND.

BALL- GAP FOR BINDER POSTS.

APPLICATION FILED M311, 1907.

Patented Dec. 27, 1910.

llhrwehc omis Es PATENT oE-EioE.

GEORGE A. SHOEMAKER AND ELIAS c. HOLLAND, OF BENTON HARBOR, MICHIGAN,ASSIGNORS T METAL SECTIONAL FURNITURE COMPANY, 017 roRTLANn, MAINE, A

' CORPORATION.

To all whom it may concern:

Be it known that we, GEORGE A. SHOE- MAKER and ELIAS C. HoLLA n,citizens of the United States, residing at Ben ton Harbor, in the countyof Berrien and State of Michigan, have lllYtfliPtl certain new andusefulIm n'oi'em-ents in Ball-Caps for Binder-Posts, of which the following isa spec1ficat1on.

Our invention relates particularly to that proved ball cap is shown inits preferred.

form with the upper and lower clamping bars of a temporary binder.

In the drawings, Figure 1. represents an elevation of the clamping bars,binding posts, and our improved ball caps connected therewith. Fig. 2.is an enlarged sectional view of our improved ball cap takenperpendicularly through the center of the cap. so Fig. 3. is across-sectional View of our ball cap taken horizontally through thecenter of the same. Fig. 4. presents details of construction of our ballcap. Fig. 5 illustrates a form of lock whichfmay be used in a binder vof this type.

More particularly described. A. A. represent the clamping bars.

A. represents the bottom bar or the one to which the posts B. B. arerigidly secured and A. represents the movable or locking bar whicli'isperforated aiid adapted to slide upon the posts B. B. The binding postsof the binder are represented by B. B. as just .named. 9 5. represents athumb piece by means of which the bar A is clamped to the posts in anydesired position through the medium of any suitable perforated mechanismcontained within said bar, and we cite for instance one form ofmechanism suitable for our purpose, as that described in United StatesLetters Patent issued to George A.'

Another BALL-CAP TOR BINDER-POSTS.

Specification of Letters Patent. Patented Dec, 2'7, 1910, Applicationfiled February 11, 1907.

Serial No. 356,756.

\Vithin the hollow bar A, we place a locking bar 7, designed to slideloosely therein. This locking bar is fitted with perforations 8, 8,corresponding in position with the-position of posts B, B, and thecorrespondingly punched bar, A. These perforations 8, 8, are slightlylarger in diameter than the diameter of the posts B, B, which may passloosely through them. Through a desirable perforation in the tube 6 andinto a come sponding perforation 9 in the bar 7, is placed an eccentric10. This eccentric 10 is secured by means of a screw 15. to the thumbscrew C by which thesaid eccentric is actuated.

This lock briefly described, consists of a spring bar 7 lying within asuitable channel in the locking bar A and is perforated at 8, 8 topermit the passage of the posts B 'B. e'rforation 9 is cut in the centerof the sai spring bar within which is fitted an eccentric 1O operated bya screw shaft 15 which protrudes through the top of the looking bar Aand has fitted-to its outer projection the thumb screw C. By turning thethumb screw C, the spring bar 7 is made to 89 move laterally within thelocking bar A and frictionally engage the posts B B by reverse movementof the thumb, screwC, the said locking engagement is released.

D. represents our ball cap and is described as follows: A threaded shank4Z isintended to engage with suitable threads in the upper end of theposts B. B. Surmounting this shank (Z is. a cap or plate, d upon whichis surmounted a. squared block (Z These 90 three parts, the shank d thecap (l and the block cl, are preferably formedof one piece of material,and through the said parts, a longitudinal perforation is made to admita screw cl. Projecting from the face cap, (1 96 are two pins, (Z (i Acap, (Z, constructed of rubber or some other resilient material and soshaped as to fit upon the squared block (Z and receive the cap (Z withina countersink in the said cap (I, is placed upon the 106.

said cap, (13 and the block (i The p i ns, d (1 are forced into thematerial of the cap (2 when the same, is placed upon the block (P. Anut, (i is fitted within a countersink in the upper surface of the cap(1 and lies below the upper surface of the said cap d.- It is designedto engagethe screw (13, which passes through all of the parts of saidcap, and is designed to hold the same together. The cap Z, as a whole,is designed to engage the upper or perforated ends of the binding postsB. 15., but preferably by the engagement of the threaded shank (P, withsuitable thread cut in the upper ends of said posts B. B. Any other formof suitable connection may be used if desired.

Ve would not be confined in our invention to the particular descriptionherein described, the intent of our invention being to cover all formsof construction wherein theeXposed portions of the ball cap or free endof the binding posts, 1). B, are constructed wholly of rubber or otherresilient or nonseratching materials.

What we claim as our invention is:

1. The combination in a binder with binding posts, clamping bars one ofwhich is rigidly secured to said binding posts, and the other fittedupon said binding posts, a lock fitted within said movable bar, of ballcaps consisting of a threaded shank adapted toengage corres ondingthreads in the free ends of said binding posts, a 'plate. surmountingsaid shank, a resilient cap adapted to engage said plate, and means toprevent the lateral rotation of the said resilient cap upon said plate.a i

2. The combination in a binder with bind ing posts, clamping bars one ofwhich is rigidly secured to said binding posts, and the other fittedwith perforations and movable'upon said binding posts, a lock fittedwithin said movable bar, of a ball cap consisting of a shank adapted toengage the free end of said binding posts, a plate surmounting saidshank, pins projecting from the upper surface of said plate, aresilient.

with perforations and movable ball "cap adapted to be f rcedupon saidpins and engage said pla e, a means for firmly binding'all of saidpartstogether.

3. The combination in 'a binder with binding posts clampingbars one ofwhich is rigidly secured to said binding posts, and

the other fitted with perforations and movable upon said binding posts,within said movable bar, of a ball cap consisting of a shank adapted toengage the free end of said posts, a plate surmounting said cap, a pinpr0 ectin from'the face of said plate, a squared block surmounting saidplate and being contiguous therewith, a resilient ball cap adapted toengage said squared block and said plate, said parts beinglongitudinally perforated, a screw passing through said perforation andadapted to engage a nut fitted within a suitable 'countersink in thesurface of the said resilient ball cap substantially as described andfor the purposes herein set forth. 4. The combination in a binder withbinding posts, clamping bars one of which is 1'1 af other fitted withperforations and movable upon said binding posts, a lock fitted withinsaid movable bar, of ball caps consisting of a threaded shank adapted toengage the free ends of said binding posts, a plate fixed to said; shankand a cap of resilient material attached to the said plate.

' GEORGE A. SHOEMAKER. ELIAS o. HOLLAND. \Vitnesses' i WViLLETT ILCORNWELL, J. M. Pon'rnn.

idly secured to said binding posts, and

